November 12, 2025 · Fireworks AI
Reinforcement Fine-Tuning adds multi-turn training and an SDK for existing agents
We've drastically improved the RFT experience with better reliability, developer-friendly SDK for hooking up your existing agents, support for multi-turn training, better observability in our Web App, and better overall developer experience.
See Reinforcement Fine-Tuning for more details.
Latest Fireworks AI platform changes
Public cookbook moves to fw-ai-external/cookbook, fireworks-training-cookbook on PyPI
Ultra-fast Serverless mode in Preview, with DeepSeek V4.1 Flash 1017 at 6-8x speed
DeepSeek V4 Flash (0731) removed from the shared Serverless Training pool
Rune 26B-A4B available on Serverless, returning probabilities for up to 256 questions
fireworks-ai 1.2.30 replaces TITO sidecar 502 errors with source-specific error codes